Five New Tetranortriterpenoids from the Seeds of Toona ciliata

[摘要]：Five new tetranortriterpenoids, toonaciliatones BF (15, resp.), together with four known compounds, dihydrocedrelone (6), cedrelone (7), 6a-acetoxyazadirone (8), and 6a-acetoxy-14 beta,15 beta-epoxyazadirone (9), were isolated from the seeds of Toona ciliata. Their structures were elucidated by spectroscopic methods, including 1D- and 2D-NMR spectroscopy.

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